
the crushing action of an impact crusher breaks a rock along natural cleavage planes, giving rise to better product quality in terms of shape. crushing stages most aggregate producers are well acquainted with the selection of crushing equipment and know it is possible to select a piece of equipment based solely on spec sheets and gradation,china used rock crushing equipments china used rock,us $6900 / set. hydraulic cone crusher is widely used for secondary and fine crushing in the fields of mining,, building materials, metallurgies and so on. the hydraulic cone crusher is popular to be used in high automatic crushing line which has strict requirement for finished products shape and ratio. the crushing cone axis is forced to swing by the eccentric bearing